mole, mole conversions, Avogadro's number, particle conversions, molar massWhen I first became a chemistry teacher I used chalk and talk to teach about the mole concept. My students would learn how to do the calculations, but would not be able to internalize or explain its meaning. Years ago, I wrote this simple activity to make the mole concept more relatable by using manipulatives. Not only can my students explain the concept, but their retention and understanding has improved dramatically.